TA-65 MD® is pure, natural, plant-based compound that can help maintain or rebuild telomeres. A telomere is a region of repetitive DNA at the end of a chromosome, which protects the end of the chromosome from deterioration. They shorten during cell division and eventually signal an irreversible state of growth arrest known as cellular senescence. The length of a person's telomeres is an indicator of his or her overall health status; short telomeres have been associated with cellular aging and dysfunction.